42430434521 has 8 divisors (see below), whose sum is σ = 45048764160. Its totient is φ = 39825707328.

The previous prime is 42430434511. The next prime is 42430434559. The reversal of 42430434521 is 12543403424.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42430434521 - 2⁶ = 42430434457 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42430434511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3394181 + ... + 3406658.

It is an arithmetic number, because the mean of its divisors is an integer number (5631095520).

Almost surely, 2^42430434521 is an apocalyptic number.

It is an amenable number.

42430434521 is a deficient number, since it is larger than the sum of its proper divisors (2618329639).

42430434521 is a wasteful number, since it uses less digits than its factorization.

42430434521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6801223.

The product of its (nonzero) digits is 46080, while the sum is 32.

Adding to 42430434521 its reverse (12543403424), we get a palindrome (54973837945).

The spelling of 42430434521 in words is "forty-two billion, four hundred thirty million, four hundred thirty-four thousand, five hundred twenty-one".